Wingus again - Katsumi here is a mercenary by trade, and used to playing by his own rules on missions - wouldn't mind having him work under some of the bigger villains, doing their dirty work, and slandering the title of "Kamen Rider" across various GIA places.

Would be interested in having him encounter some of Shoutarou's CR, due to the matching Driver, and base design styles of Katsumi's Eternal vs. Shou's Joker.